FrameBorder.java

package edu.revtek.javax;

import org.w3c.dom.css.*;

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;

public class FrameBorder extends AbstractBorder implements MouseListener {

	private JFrame frame;
	private int padding;
	private final List<AbstractComponent> components = new LinkedList<>();

	public FrameBorder(JFrame frame) {
		this.frame = frame;
		frame.addMouseListener(this);
		Insets insets = getBorderInsets(null);
		padding = Math.max(insets.left, insets.right);
		components.add(new Label(Color.GRAY, new Font(Font.SANS_SERIF, Font.BOLD, 12), "Revtek"));
		components.add(new HorizontalStrut(this));
		components.add(new Label(Color.GRAY, new Font(Font.SANS_SERIF, Font.BOLD, 12), "v0.1"));
		components.add(new SystemButton(SystemButton.TYPE_MINIMIZE));
		components.add(new SystemButton(SystemButton.TYPE_MAXIMIZE));
		components.add(new SystemButton(SystemButton.TYPE_CLOSE));
	}

	@Override
	public Insets getBorderInsets(java.awt.Component c, Insets insets) {
		return new Insets(40, 5, 5, 5);
	}

	@Override
	public void paintBorder(java.awt.Component c, Graphics g1, int x, int y, int width, int height) {
		Graphics2D g = (Graphics2D) g1;
		Insets insets = getBorderInsets(c);
		g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
		Rectangle border = new Rectangle(0, 0, width, height);
		g.clip(border);
		/**
		 * Fill Border
		 */
		g.setColor(new Color(20, 20, 20));
		g.fill(border);
		/**
		 * Draw TitleBar
		 */
		int titleHeight = insets.top - insets.bottom;
		Rectangle title = new Rectangle(x, y, width, titleHeight);
		g.setPaint(new GradientPaint(x, y, new Color(50, 50, 50), x, titleHeight, new Color(40, 40, 40)));
		g.fill(title);
		drawBevel(g, width, titleHeight, 2);
		/**
		 * Draw TitleBar Outline
		 */
		g.setColor(Color.BLACK);
		title.setBounds(0, 0, width - 1, titleHeight - 1);
		g.draw(title);
		/**
		 * Draw Outline
		 */
		g.setColor(Color.BLACK);
		border.setBounds(0, 0, width - 1, height - 1);
		g.draw(border);
		/**
		 * Draw TitleBar Components
		 */
		for (AbstractComponent component : components) {
			Rectangle bounds = getBounds(component);
			component.paint(g, bounds.x, bounds.y, bounds.width, bounds.height);
		}
		/**
		 * Dispose
		 */
		g.dispose();
	}

	public Rectangle getBounds (AbstractComponent component) {
		Insets insets = getBorderInsets(null);
		int index = getComponents().indexOf(component);
		int y = ((insets.top - insets.bottom) / 2) - component.getHeight() / 2;
		int x = padding * 2;
		for (int i = index - 1; i >= 0; i--) {
			x += getComponents().get(i).getWidth();
		}
		x += (index * padding);
		return new Rectangle(x, y, component.getWidth(), component.getHeight());
	}

	private static void drawBevel(Graphics2D g, int width, int height, int bevelStroke) {
		int offset = bevelStroke / 2;
		int bevelWidth = width - bevelStroke;
		int bevelHeight = height - bevelStroke;
		g.setStroke(new BasicStroke(bevelStroke));
		/**
		 * Shadow
		 */
		g.setColor(new Color(25, 25, 25, 150));
		g.drawLine(bevelWidth, offset, bevelWidth, bevelHeight);
		g.drawLine(offset, bevelHeight, bevelWidth, bevelHeight);
		/**
		 * Light
		 */
		g.setColor(new Color(100, 100, 100, 150));
		g.drawLine(offset, offset, offset, bevelHeight);
		g.drawLine(offset, offset, bevelWidth, offset);
		g.setStroke(new BasicStroke());
	}

	public int getPadding() {
		return padding;
	}

	public void setPadding(int padding) {
		this.padding = padding;
	}

	public List<AbstractComponent> getComponents() {
		return components;
	}

	public JFrame getFrame() {
		return frame;
	}

	@Override
	public void mouseClicked(MouseEvent e) {
		for (AbstractComponent component : components) {
			Rectangle bounds = getBounds(component);
			if (bounds.contains(e.getPoint())) {
				component.clicked(e);
			}
		}
	}

	@Override
	public void mousePressed(MouseEvent e) {

	}

	@Override
	public void mouseReleased(MouseEvent e) {

	}

	@Override
	public void mouseEntered(MouseEvent e) {

	}

	@Override
	public void mouseExited(MouseEvent e) {

	}

	private class SystemButton extends AbstractComponent implements ActionListener {

		private static final int TYPE_CLOSE = 0;
		private static final int TYPE_MAXIMIZE = 1;
		private static final int TYPE_MINIMIZE = 2;
		private final int type;

		public SystemButton(int type) {
			super(20, 20);
			this.type = type;
			getListeners().add(this);
		}

		@Override
		public void paint(Graphics g, int x, int y, int width, int height) {
			switch (type) {
				case TYPE_CLOSE:
					g.setColor(new Color(255, 50, 50, 20));
					break;
				case TYPE_MAXIMIZE:
					g.setColor(new Color(50, 255, 50, 20));
					break;
				case TYPE_MINIMIZE:
					g.setColor(new Color(50, 50, 255, 20));
					break;
			}
			g.fillOval(x + 5, y + 5, width - 10, height - 10);
			g.setColor(Color.BLACK);
			g.drawOval(x + 5, y + 5, width - 10, height - 10);
			switch (type) {
				case TYPE_CLOSE:
					break;
				case TYPE_MAXIMIZE:
					break;
				case TYPE_MINIMIZE:
					break;
			}
		}

		@Override
		public void actionPerformed(ActionEvent e) {
			switch (type) {
				case TYPE_CLOSE:
					int answer = JOptionPane.showConfirmDialog(frame, 
							"Are you sure you want to exit?", 
							"Are you sure?",
							JOptionPane.YES_NO_OPTION);
					if (answer == JOptionPane.YES_OPTION) {
						System.exit(0);
					}
					break;
				case TYPE_MAXIMIZE:
					boolean maxed = (frame.getExtendedState() & Frame.MAXIMIZED_BOTH) > 0;
					frame.setExtendedState(maxed ? frame.getExtendedState() & ~Frame.MAXIMIZED_BOTH :
							frame.getExtendedState() | Frame.MAXIMIZED_BOTH);
					// fix overlapping of the task bar
					break;
				case TYPE_MINIMIZE:
					frame.setExtendedState(frame.getExtendedState() | Frame.ICONIFIED);
					break;
			}
		}

	}

}